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Title
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Caesium carbonate supported on hydroxyapatite-encapsulated Ni0.5Zn0.5Fe2O4 nanocrystallites as a novel magnetically basic catalyst for the one-pot synthesis of pyrazolo[1,2-b]phthalazine-5,10-diones
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Type
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JournalPaper
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Keywords
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Ni0.5Zn0.5Fe2O4 magnetic nanoparticle-supported caesium carbonate; 1H-pyrazolo[1,2-b]phthalazine-5,10-diones; aldehydes; malononitrile; ethyl cyanoacetate; phthalhydrazide; green chemistry
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Abstract
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A novel nanomagnetic basic catalyst of caesium carbonate supported on hydroxyapatite-coated Ni0.5Zn0.5Fe2O4 magnetic nano- particles (Ni0.5Zn0.5Fe2O4@HAP-Cs2CO3) was prepared. This new catalyst was fully characterized using Fourier transform infrared spectroscopy, transmission and scanning electron microscopy, X-ray diffraction and vibrating sample magnetometry techniques, and then the catalytic activity of this catalyst was investigated in the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione deriv- atives. Also, Ni0.5Zn0.5Fe2O4@HAP-Cs2CO3 could be reused at least five times without significant loss of activity and could be recov- ered easily by applying an external magnet. Thus, the developed nanomagnetic catalyst is potentially useful for the green and economic production of organic compounds.
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Researchers
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Reza Tayebee (Not In First Six Researchers), Amir Khojastehnezhad (Not In First Six Researchers), Farid Moeinpour (Fifth Researcher), esmaeil rezaei seresht (Fourth Researcher), Samaneh Sedigh Ashrafi (Third Researcher), Samaneh Barat Nam Chalaki (Second Researcher), Behrooz Maleki (First Researcher)
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